Semiconductor luminaire

Abstract

A semiconductor luminaire includes a carrier; an optoelectronic semiconductor chip mounted on the carrier, the semiconductor chip emitting ultraviolet or visible radiation; a luminaire housing not covering the semiconductor chip in a direction of main emittance; an optical cover placed downstream of the semiconductor chip in a direction of mails emittance: and an index matching layer located between the semiconductor chip mid the optical cover, wherein the optical cover provides a radiation exit surface of the luminaire, and wherein radiation running along the direction of main emittance from the semiconductor chip to the radiation exit surface solely propagates in solid or liquid materials.

1 . A semiconductor luminaire comprising:
 a carrier;   an optoelectronic semiconductor chip mounted on the carrier, the semiconductor chip emitting ultraviolet or visible radiation;   a luminaire housing not covering the semiconductor chip in a direction of main emittance;   an optical cover placed downstream of the semiconductor chip in a direction of main emittance; and   an index matching layer located between the semiconductor chip and the optical cover,   wherein the optical cover provides a radiation exit surface of the luminaire, and   wherein radiation running along the direction of main emittance from the semiconductor chip to the radiation exit surface solely propagates in solid or liquid materials,   
     
     
         2 . The semiconductor luminaire according to  claim 1 , wherein the optical cover is shaped lens-like at least in parts. 
     
     
         3 . The semiconductor luminaire according to  claim 1 , further comprising a heat sink wherein the carrier is directly provided on the heat sink. 
     
     
         4 . The semiconductor luminaire according to  claim 1 , wherein the optical cover comprises a flange, the optical cover being fixed to the carrier by the luminaire housing and by the flange. 
     
     
         5 . The semiconductor luminaire according to  claim 1 , further comprising a gasket, the gasket located between the optical cover and the luminaire housing to seal the carrier and the semiconductor chip against ambient conditions. 
     
     
         6 . The semiconductor luminaire according to  claim 5 , wherein the gasket, the luminaire housing and the optical cover overlap in a lateral direction. 
     
     
         7 . The semiconductor luminaire according to  claim 1 , wherein the semiconductor chip is directly mounted onto the carrier, the carrier being one item selected from the group consisting of a circuit board, a printed circuit board, a ceramic and a metal core substrate. 
     
     
         8 . The semiconductor luminaire according to  claim 1 , further comprising a chip housing which the semiconductor chip is placed in, the chip housing being directly mounted onto the carrier. 
     
     
         9 . The semiconductor luminaire according: to  claim 1 , comprising a plurality of semiconductor chips, all semiconductor chips being covered by the optical cover, and the optical cover being one-pieced. 
     
     
         10 . The semiconductor luminaire according to  claim 1 , wherein the optical cover comprises a lens array, each lens and each semiconductor chip being assigned one-to-one to each other. 
     
     
         11 . The semiconductor luminaire according to  claim 1 , comprising a plurality of semiconductor chips and a plurality of optical covers, the optical covers being disposed on the carrier and displaced in a lateral direction and fixed by means of the luminaire housing, each optical cover being assigned to one or more semiconductor chips. 
     
     
         12 . The semiconductor luminaire according to  claim 1 , wherein the radiation exit surface of the optical cover is flush with an outer surface of the luminaire housing. 
     
     
         13 . The semiconductor luminaire according to  claim 1 , wherein the semiconductor chip is located in a recess of the optical cover. 
     
     
         14 . A vehicular headlamp comprising the semiconductor luminaire according to  claim 1 .